The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 1984
Filed:
Jun. 28, 1982
Applicant:
Inventors:
Ichiro Chibata, Suita, JP;
Shigeki Yamada, Toyonaka, JP;
Chikara Hongo, Osaka, JP;
Ryuzo Yoshioka, Kaizuka, JP;
Assignee:
Tanabe Seiyaku Co., Ltd., Osaka, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
26050112 ; 562401 ;
Abstract
The present invention relates to the optical resolution of a p-hydroxyphenylglycine salt with simultaneous racemization of the undesired enantiomer thereof. The invention is carried out by preferential crystallizing out the desired enantiomer from a supersaturated solution of the racemic modification thereof in a lower aliphatic acid in the presence of an aliphatic or aromatic aldehyde.